Oil-free air compressor and vehicle

An oil-free air compressor, wherein, comprising a cylinder body, the cylinder body is internally provided with a primary compression chamber, a primary exhaust chamber and a high-pressure chamber;

• wherein the primary compression chamber and the primary exhaust chamber are coaxially arranged and are respectively parallel to the axis of the high-pressure chamber;
• the sum of the axial length of the primary compression chamber and the axial length of the primary exhaust chamber is less than the axial length of the high-pressure chamber;
• further comprising a first valve plate assembly, the first valve plate assembly is arranged between the primary compression chamber and the primary exhaust chamber;
• the first valve plate assembly is provided with a first check valve body, the first check valve is used to allow unidirectional flow from the primary compression chamber to the primary exhaust chamber;
• further comprising a box body, the box body is located below the cylinder body and is connected to the cylinder body;
• further comprising a crankshaft assembly, a low-pressure connecting rod and a low-pressure piston assembly;
• the crankshaft assembly is arranged inside the box body, and the primary compression chamber is located between the primary exhaust chamber and the crankshaft assembly;
• the low-pressure piston assembly is movably arranged inside the primary compression chamber and is connected to the crankshaft assembly through the low-pressure connecting rod;
• further comprising a high-pressure connecting rod and a high-pressure piston assembly;
• the high-pressure piston assembly is movably arranged inside the high-pressure chamber and is connected to the crankshaft assembly through the high-pressure connecting rod;
• the direction from the primary compression chamber pointing to the primary exhaust chamber is defined as upward, and the opposite direction is defined as downward, along the axial direction of the primary compression chamber and the primary exhaust chamber;
• the top dead center of the high-pressure piston assembly is located above the first valve plate assembly, and the top dead center of the motion of the low-pressure piston assembly is located below the first valve plate assembly.